/*
 * [New BSD License]
 * Copyright (c) 2011-2012, Brackit Project Team <info@brackit.org>  
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Brackit Project Team nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.brackit.xquery.node.d2linked;

import org.brackit.xquery.atomic.Atomic;
import org.brackit.xquery.atomic.QNm;
import org.brackit.xquery.atomic.Str;
import org.brackit.xquery.xdm.DocumentException;
import org.brackit.xquery.xdm.Kind;
import org.brackit.xquery.xdm.OperationNotSupportedException;

/**
 * 
 * @author Sebastian Baechle
 * 
 */
public final class CommentD2Node extends D2Node {
	private Str value;

	public CommentD2Node(Atomic value) throws DocumentException {
		this(null, FIRST, value);
	}

	CommentD2Node(ParentD2Node parent, int[] division, Atomic value) throws DocumentException {
		super(parent, division);
		this.value = checkValue(value);
	}

	private Str checkValue(Atomic v) throws DocumentException {
		String s = v.stringValue();
		if (s.contains("--")) {
			throw new DocumentException("Character sequence \"--\" is not allowed in comment content");
		}
		if (s.endsWith("-")) {
			throw new DocumentException("Comment content must not end with \"-\"");
		}
		return v.asStr();
	}

	public Kind getKind() {
		return Kind.COMMENT;
	}

	@Override
	public QNm getName() throws DocumentException {
		return null;
	}

	@Override
	public Atomic getValue() {
		return value;
	}

	@Override
	public void setValue(Atomic value) throws OperationNotSupportedException,
			DocumentException {
		this.value = checkValue(value);
	}

	@Override
	public D2Node getNextSibling() throws DocumentException {
		if (parent == null) {
			return null;
		}

		return parent.nextSiblingOf(this);
	}

	@Override
	public D2Node getPreviousSibling() throws DocumentException {
		if (parent == null) {
			return null;
		}

		return parent.previousSiblingOf(this);
	}

	@Override
	public String toString() {
		return String.format("(type='%s', name='', value='%s')", Kind.COMMENT,
				value);
	}
}
